Osg 1124300 Straight Flute Tap 11/16-11 Uns Plug Hss

Product Description

The OSG 1124300 is a straight flute plug tap designed for cutting 11/16-11 UNS right-hand internal threads in a wide range of ferrous and non-ferrous materials. Built from high-speed steel with a bright/uncoated finish, this tap offers a 4-flute configuration that provides stable cutting action and reliable chip clearance in through-hole and short blind-hole applications. It carries an H3 thread limit for consistent tolerance control. Overall length is 4-1/32 inches, with a thread length of 1-13/16 inches and a shank diameter of 0.542 inches. It is sized and configured for use in manual or machine tapping operations by machinists and maintenance technicians.

This tap is suited for production and maintenance tapping in machine shops, manufacturing facilities, and industrial maintenance environments. The plug chamfer style makes it appropriate for through-hole tapping and for starting threads in blind holes where there is sufficient depth clearance. It is rated for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. The H3 tolerance class targets standard fit applications where controlled oversize is required to account for spring-back in tougher materials.

Key Features

• 11/16-11 UNS thread form with right-hand thread direction
• 4-flute straight flute geometry for stable cutting in a range of materials
• Plug chamfer for through-hole and moderate blind-hole tapping
• H3 thread limit for consistent tolerance control
• High-speed steel construction with bright/uncoated finish
• No coolant-through requirement - compatible with standard flood or manual lubrication

Compatibility

Designed for tapping 11/16-11 UNS threads in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. Part of OSG Series 101.

Installation Notes

Install in a tap wrench, drill press, or CNC tapping head with the correct 11/16-11 UNS tap holder or collet. Always apply appropriate cutting fluid for the workpiece material before beginning the tapping operation. Back the tap out periodically to clear chips and prevent binding, particularly in deeper holes. Verify hole diameter and depth against UNS specifications before tapping to ensure proper thread form and tool life.